https://www.asteroidmission.org/
Very strong but low on the horizon (7 degrees here)
8445.768MHz +/- Doppler
2.4m PF dish
125 deg. K total system NT
Spectrum inverted due to high side LO.
OSIRIS-APEX (Was OSIRIS-REx now on the way to Apophis)
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Not so strong on the 1.2m dish. The trees don't help. The noise change on waterfall shows the difference between sky & tree noise.
9GHz LO -
Much better now it's clear of the trees. -112dBm Madrid (34m dish)
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-112dBm Madrid (34m dish)
9GHz LO -
9GHz LO
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HDSDR Software this time. -111dBm on DSS54, Madrid.
9GHz LO -
-117dBm on DSS55, Madrid, 917kBd data at the time
205.5 million km
9GHz LO, 1.2m dish -
-119dBm on DSS55, Madrid, 600kBd data at the time
283 million km
9GHz LO, waterfall spectrum inverted, 1.2m dish -
-118dBm on DSS55, Madrid, 920kBd data at the time
232 million km
8445.683MHz 21.4MHz IF -
s-band
Hat den Titel des Themas von „OSIRIS-REx (Chasing near Earth Asteroid Bennu)“ zu „OSIRIS-REx (ORX, Orbiting near-Earth asteroid Bennu)“ geändert. -
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-121dBm on DSS55, Madrid with a data rate of 413kBd
321Mkm OSIRIS-REx preparing for the touch-and-go collection from Bennu
https://www.nasa.gov/feature/g…gins-its-countdown-to-tag
RX Tuned to 8445.545MHz
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Congratulations to the OSIRIS-REx team for the touch and go collection (TAG) yesterday.
Unfortunately ORX was out of sight to Europe at the time. This plot was taken whilst it was downlinking to Madrid a few hours before the TAG.
8445.609MHz, -121dBm on both DSS54 & 55, Madrid.
339.2Mkm
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Thanks to OK9UWU's pipeline for Satdump the recording from yesterday could be demodulated. Unfortunately all that can be seen is a binary stream that contains a blocks of ASCII so it's probably just telemetry.
Today ORX was about 24dB weaker which is about right for it going from 60000km yesterday to 1Mkm when I looked today. There's no chance of getting much from it until it returns again.
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s-band
Hat den Titel des Themas von „OSIRIS-REx (ORX, Orbiting near-Earth asteroid Bennu)“ zu „OSIRIS-APEX (Was OSIRIS-REx now on the way to Apophis)“ geändert. -
OSIRIS-Rex has been renamed OSIRIS-APEX. Extract from here:
The OSIRIS-APEX mission will reprise the discoveries of the OSIRIS-REx spacecraft at a second asteroid, Apophis. An hour after Apophis’s dramatic close approach to Earth on April 13, 2029, The OSIRIS-APEX spacecraft will use Earth’s gravity to put itself on a course to rendezvous with the asteroid to begin an 18-month campaign of investigation and discovery.
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